Problems With the <location> element in my Web.Config

[Guest]

Im trying to setup impersonation in the root directory and turn it off (
false ) in another directory. im doing to allow my crystal reports to work (
as i get the login failed message ) and also ensure that only certain people
has access to the maintenance folder ( impersonation = true ). Here is the
webconfig :

<?xml version="1.0" encoding="utf-8"?>
<configuration>

<system.web>

</system.web>

<location path="~/Maintenance">
<system.web>
<identity impersonate="false"/>
</system.web>
</location>


</configuration>

 

[Guest]

ALSO IN ADDITION TO THE DETAILS BELOW

This is the complete web.config ( well with the relavent parts )

<configuration>

<system.web>
<identity impersonate="true"/>
</system.web>

<location path="~/Maintenance">
<system.web>
<identity impersonate="false"/>
</system.web>
</location>
</configuration>

ive tried with the tilde and without it. it continues to use the NT
AUTHORITY\NETWORK SERVICE instread of changing to the administrator account (
which im logged on as ) when i access the maintenance website

any help would be apprecaited
thanks !